Record perforation analyzing mechanism



Feb. 11, 1958 1. ROTH RECORD PERFORATION ANALYZING MECHANISM Filed April6, 1956 5 Sheets-Sheet 2 INVENTOR. ROBERT I. ROTH BY -w-f z ATTo yEYFeb. 11, 1958 R. I. ROTH 2,822,980

RECORD PERFORATION ANALYZING MECHANISM Filed April 6, 1956 5Sheets-Sheet 3 FIG.3

CIRCUIT CIRCUIT CIRCUIT OUT OUT IZI FIG, 4

MOVEMENT OF ANALYZING I BRUSHES CR1 READOUT PULSES 0F FIG .I

cm a READOUT PULSES OF FIG.2

CR1 8\ READOUT PULSES OF F|G.3

United States RECORD PERFORATION ANALYZING MECHAYISM ApplicationApril'6, 1956, Serial No. 576,725

8 Claims. (Cl. 235-6111) This invention relates to perforation analyzingmeans and more particularly to the type which analyzes the perforatedrecord for the purpose of deriving differentially timed work impulses.

It is well known in the patent to R. E. Page et al. No. 2,484,114 toanalyze perforations in the IBM form of card by brushes which areretained at rest during the analyzing period and in accordance with thebrushes which pass through holes emit diiferentially timed impulsesunder control of a coordinated emitter. a record column contains holesarranged in combination, such as 8-4, 8-3, or other desirable codedcombinations, it was necessary to emit two impulses and utilizetranslating and converting devices exterior of such perforationanalyzing means and emitter to secure useful differentially timedimpulses from the combinational holes.

It is then the principal object of the present invention to associatewith the plurality of brushes of an electrical analyzing device anemitter which emits differentially timed impulses when holes appearsingly, and differentially timed impulses when holes appear in codedcombination.

According to the present invention the emitter readout points haveindividual wire connections to the respective analyzing brushes tocomplete a work circuit as a readout brush passes over an efiectiveemitter readout point which is rendered alive or marked by therespective analyzing brush passing through a hole in a column of therecord.

Said emitter herein is provided with supplemental readout contacts foreach coded combination, and each is rendered alive when an impulsecircuit is serially completed through a pair of brushes for the holes incombination.

For example, if the card has the coded combination 8-4, or 8-3, as isuseful to control alphabet printing mechanisms of a certain type, a testpulse applied to one brush ascertains whether a hole apepars in one ofthese positions and if so whether the circuit network may be continuedthrough the brush at the other position, to the related emitter point.

Therefore, it is a further object of the present invention to provide acircuit network intermediate analyzing elements and an emitter whichtranslates coded combination holes to single differentially timedimpulses, said circuit network being completed serially through a pairof analyzing brushes for the coded holes.

For the purpose of showing the various uses of the improved recordperforation analyzing means, it is shown herein, by way of one example,for converting 8-4, 8-3 coded combinations useful in controllingalphabet printing mechanisms of the type shown in the patent to R. E.Page et al., No. 2,438,071.

Another embodiment shown herein employs the same novel principle for anemitter of the type which emits twelve differentially timed impulses forentering duodecirnal amounts, which are digits 1-9, l0, l1 and 12 forHowever, when atent O 2,822,980 Patented Feb. 11, 1958 the Englishmonetary system, or for entering fractions, etc.

Another embodiment discloses a combined record perforation analyzingmeans and emitter which is adapted for analyzing and converting a codedcard having the 0, 1, 2, 4, 7 coded combination. In such coded card 1,2, 4, 7 are utilized for emitting digit impulses l, 2, 4 and 7 by singleholes, whereas for digits 3, 5, 6, 8 and 9 different coded combinations,i. e. 2-1; 4-1; 4-2; 7-1; 7-2 respectively are utilized. This points outthe possibility of using the present translating circuit network formore than two or three coded combinations as were used in the precedingtwo modifications.

It is apparent then that the present invention is not restricted to theform of embodiments shown, and may be utilized in a variety of ways. Thenovel concept of emitting a differentially timed impulse by a circuitcompleted serially through at least a pair of analyzing brushes forcoded combinations has obviously the advantage of simplicity in codeconversion and translation.

Other objects of the invention will be pointed out in the followingdescription and claims and illustrated in the accompanying drawings,which disclose, by way of example, the principle of the invention andthe best mode, which has been contemplated, of applying that principle.

in the drawings:

Fig. 1 is a transverse sectional view and represents the form of recordperforation analyzing means and coordinated emitter for emittingdiflferentially timed impulses 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 and twoextra impulses for 8-4 and 8-3 combinations.

Fig. 2 is a transverse sectional view of the same form of recordperforation analyzing means as Fig. 1, but having a different circuitnetwork so arranged that 1-9 digit impulses are transmitted from singleholes, and digits 10, 11 and 12 for duo-decimal or fractional amountswhen three different coded combinations are utilized.

Fig. 3 is a transverse sectional view of the same form of recordperforation analyzing means and coordinated emitter as in Fig. 1 buthaving the emitter and translator circuit network modified to becontrolled by a card having the 1, 2, 4, 7 coded combination. In thisarrangement five different coded combinations are translated by thecircuit network.

Fig. 4 is a timing diagram.

Analyzing mechanism The analyzing mechanism for the perforated records,and the coordinated emitter which is constructed in the novel manner tobe subsequently described, is preferably of the type which analyzes therecords while they are at rest, and conveniently may be the type shownin the patent to R. E. Page et al., No. 2,484,114; Figs. 1, 2, and 3herein showing suitable modifications of such analyzer for carrying outthe present invention.

Such analyzer is adapted in Figs. 1 and 2 to analyze the type ofperforated record shown in the patent to C. D. Lake, No. 1,772,492,granted August 12, 1930. In general, the card 10 has perforations whichare rectangular in shape and arranged in eighty vertical columns, and intwelve horizontal rows through which perforations electrical circuitsare closed to control operations of the machine. The index points ineach column are designated 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 11, (X) and 12(R).

In more detail, the analyzing means shown in the aforementioned patentto R. E. Page et al., No. 2,484,114 is provided as shown in Figs. 1 and2 with an analyzing unit 11 for each vertical card column, whichanalyzing units 11 are carried by a reciprocable frame member 12consisting of a single metallic casting. The frame member 12 is formedso as to be capable of holding analyzing units 11 for a correspondingnumber of vertical card col- 3 umns. Each analyzing or brush carryingunit comprises a metal plate which in thickness is less than the widthof a card column and the plurality of brush carrying units 11 aremounted on the frame member 12 insulated from each other. The 80analyzing units 11 are mounted so asto fit or pass through a rectangularopening 13 formed in the frame member 12. By means of mounting screws 14transverse bars 15 of insulating material are carried by the framemember 12 and said bars 15 are formed with slots 16 which receive themetal analyzing units 11 in such manner that they are insulatably spacedfrom each other but correlate the brushes 19 with the index pointpositions. The analyzing units are locked in position on the framemember 12 by rods 17 of insulating material which fit in semi-circularcutout portions formed at the ends of the analyzing units 11 and alongthe edge of each insulating bar 15.

Each analyzing unit is provided with inclined slots adapted to receiveferrules 18, each of which carries the analyzing brushes 19 which arepreferably inclined in the direction of card feed and are normallyelevated while the cards are being fed to analyzing position. Theterminal ends of the analyzing brushes 19 are ground flush with astraight edge to enable an eflicient electrical contact with a relatedindividual contact member 20, there being 12 of these for contact withthe analyzing brushes for each card column.

The means for depressing the frame member 12 in a timed operation of themachine may consist of any suitable means, it only being essential thatthe frame member is in lowered position between 105 and 315 (see Fig.4-) of the machine cycle during which time electrical impulses from anemitter are being transmitted. Furthermore, any suitable means may beprovided for feeding the cards in a successive manner to the analyzingmeans and since it forms no part of the present invention such feedingmeans are not shown. Such feeding means should feed a card to theanalyzing means so that the latter retains contact with the card duringthe time the electrical impulses are transmitted and thereafter feedsaid card out of the analyzing means in order to receive a successivecard.

. It is desirable to hold the cards stationary during an analyzingoperation and to this end the patent to R. E. Page et al., No. 2,484,114also shows clamping plates 21 which press the card 10 against thesurface of the card feeding bed. Incidentally, other expedients to holdthe card in proper analyzing position consist of a depressible card stop22 which is depressed as the card is fed to the v left in Figs. 1, 2 and3 to analyzing position against shift:- able aligning stops 23 which areactuated to the right slightly to move any disaligned card against thefixed card stops 22 at the right.

When a record card is in analyzing position the card perforations arethen read out through an emitter which has wiring connections to thecontact points engageable with the brushes 19 through the holes whichare present in a card column.

Each analyzing plate 11 also has an upwardly extending wire terminal 24(Fig. l) to which a wire may be connected to extend the impulse circuitby the metal plate 11 and through the brushes 19 and card holes to theassociated contact points 20.

Operation of machine in connection with Fig. 1

In Fig. 1 the perforation analyzing means is shown interconnected withan emitter which is wired to the brushes to transmit impulses 8-4, 8-3,9-1, 0, 11, and 12 to a print control magnet 26.

, As is well known in Patent No. 2,438,071 to Ralph E. Page et al., thetransmission of such impulses to magnet 61 therein, which corresponds tomagnet 26 herein, is'for the purpose of selecting groups of type, andtype in each selected group. Especially important are the 8-4 or 8-3 4impulses which are for the purpose of selecting two extra groups ofpunctuation type. The Fig. 1 construction is arranged according to thepresent invention to translate such coded combinations to derive asingle impulse from the emitter.

An impulse emitter generally designated by numeral 108 is operativelyassociated with each column of analyzing brushes 19. In more detail eachemitter or commutator has at its periphery a segment 109 for testing thepresence of holes at index points 9-0, 11 and 12 and a segment 110 fortesting the presence of 8-4, 8-3 combinational holes in a controllingcolumn. In the other quadrant of the emitter there is disposed readoutcontact points 111 for reading out impulses 8-4, 8-3, 9-0, 11, and 12.

In the other two quadrants of the emitter below the contact points 109,110, 111 are current supply segments 112 and 113. There are twooppositely disposed brushes 114 and 115 and two oppositely disposedbrushes 116 and 117. The four brushes are carried by an insulatingmember and rotated by a shaft 118 which makes a quarter revolution permachine cycle. The four brushes are shown in a position whichcorresponds to the position necessary at the start of each machinecycle.

Current is supplied to the electrical circuits by suppl lines 120 and121. Test circuits are completed from theline side 120, through circuitbreaker cam contacts CR1, and when a brush, such as 116 makes contactwith the segment 112, the test impulse is extended to brush 117 sincebrushes 116 and 117 are interconnected by a Wire 122. The circuitbreaker impulses are transmitted at a time which are coincident with thereadout pulses for the emitter 108 from readout contact points 111 (seeFig. 4); During 8-4 and 8-3 impulse times the brush 117 tests for thepresence of 8-4 or 8-3 holes in combination, the circuit being extendedfrom the segment 110 and a wire 123 to a translating circuit network tobe later described. Thereafter, as the brush 117 makes contact with thesegment 109 designated 9-0, 11 and 12, a second test impulse passes to awire 124 which is connected to the wire terminal 24. It will be seenfrom Fig. 1 that the contact points 20 which are engaged by therespective brushes 19 through the card holes have individual wireconnections 125 to the related contact points 111 and when a brush 19passes through a hole a respective wire 125 extends the test circuitimpulse to the related contact point 111.

Alternatively, the brushes 19 could be wired individually to contactpoints 111 if the contact points 20 were common. During the impulsetimes 9-0, 11 and 12 the circuit is completed from the live contactpoint 111, brush 114, wire 126, brush 115, segment 113, print controlmagnet 26 to the line side 121.

There will now be explained the operation of the machine in connectionwith the circuit diagram when either combination of holes 8-3 or 8-4 arein a controlling column.

In Fig. 1 it will be seen that the segment 110 is for the purpose oftesting the presence of the 8-3 and 8-4 holes so that the impulsecircuit will extend via wire 123 to the contact point 20 designated 8.Thus, there is first a test for the determination of the presence of an8 hole in a controlling column and upon the presence of such 8 hole thecircuit will then be extended up through the brush 19 passing throughthe 8 hole in contact with the 8 contact point 20, to the metal plate11. The test circuit will then branch down through either the brush 19passing through the 4 hole or the 3 hole in the same controlling columnand for a 4 hole by a wire to the contact point 111 designated 8-4, orupon the presence of a 3 hole through a wire 131 to contact point 111designated 8-3. Accordingly, a timed impulse 8-4 or 8-3 will be read outwhen the brush 114 encounters either of such contact points 111. Acircuit will then extend, as described by wire 126, brush 115, segment113, print control magnet 26, to the line side 121.

It is obvious that, in the absence of a 3 or 4 hole, the

above test circuit will be ineffective and an 8-4 or 8-3 impulse willnot occur, since neither of the contact points 111 designated 8-4 or 8-3is live.

Since the shaft 118 receives only a quarter revolution in each machinecycle, it will be noted that in the following machine cycle the fourbrushes will have received a rotation of 90 and brush 1.14 will thenwipe over the segment 112 as the brush 115 wipes over the contact points1tt9110, and brush 117 will wipe over the readout contact points 111 asits oppositely disposed brush 116 wipes over the segment 113. However,the circuit operation is precisely the same as above so that beyond thischange in position of the emitter brushes the principle of operation isprecisely as has been described.

Operation of machine in connection with Fig. 2

Fig. 2 represents a modification of the emitter for transmitting twelvedifferentially timed impulses 12, 11, 10, 91 for entering duo-decimalamounts in an accumulator under control of a column of the card. Digits9-1 are entered under control of correspondingly designated single holesin the column of the card, whereas the entry of is initiated by holes7-3, the entry of the 11 upon presence of holes 6-5 and the entry of 12upon the presence of the holes 8-4.

The emitter has three read-in contact points designated 133 which aresuccessively engaged by the brush 117 to determine the presence of thecombinational holes 8-4, 6-5 or 7-3, in this order. When the brush 117makes contact with the first contact point 133 the circuit is extendedfrom the 8-4 contact point 133 and wire 134 to the contact pointdesignated 8, thence through the associated brush 19, metal Contactplate 11, through the 4 brush 19, wire 135 to the 12 contact point 111.When brush 114 makes contact with such contact point an impulse Will betransmitted at the 12 impulse point time (see Fig. 4) to a magnet 136.Said magnet is an accumulator clutch control magnet well known in theart and when energized engages a clutch to rotate an accumulator wheeltwelve units to enter 12 therein. The 11 and 10 units are also enteredin the accumulator wheel upon the presence of other combinational holes.When the second contact point 133 is engaged by the brush 117 and if theholes 6-5 are present a circuit will be extended by wire 137 andserially through the 6 and 5 brushes 19 to a Wire 1138 to contact point111 designated 11. This later diiferentially timed impulse (see Fig. 4)will effect the entry of 11.

It need only now be described that when the contact point 133 designated7-3 is engaged by the brush 117 a circuit will be extended by wire 139and serially through tie 7 and 3 brushes 19 to a wire 140 to contactpoint 111 designated 19. When engaged by the brush 114 a differentiallytimed impulse will be transmitted to enter ten units in the accumulatorWheel.

The Fig. 2 arrangement is especially useful in entering duo-decimalamounts as in the English monetary system but may also representfractions. The Fig. 2 arrangement likewise shows the translation ofcombinational holes through a translating circuit network intermediateperforation analyzing brushes and the emitter. It is obvious that afurther extension of the system may be devised for entering otherfractional amounts less or greater than 12ths. For example, 16ths, inwhich case more combinational holes Will be required to enter theadditional numbers.

Operation of the machine in connection with Fig. 3

Fig. 3 represents the construction of perforation analyzing means andemitter, specially adapted for the analysis of double deck perforatedcards. By selection of a suitable code, preferably the l, 2, 4, 7 codeherein, all of the digits and the X and Y or 11 and 12 designations maybe designated in half a controlling column.

Six index points in the upper half of the card may represent onedesignation and the other lower six index point positions in the lowerhalf of the controlling column may represent another designation. Inthis manner, as is well known, the character representing capacity of acard may be doubled.

The emitter, therefore, is of a dual construction to take care of theupper and lower designations in each controlling column and since theconstruction and operation are alike for both sections, it will bedescribed only in connection with one. The code and the designationsrepresented are as follows:

Digit or designation Code 9 7-2 8 7-1 7 7 6 4-2 5 4-1 4 4 3 2-1 2 2 1 10 11-12 11 11 12 12 With respect to the emitter construction, a rotatingtube 150 is substituted for shaft 118 in Figs. 1 and 2 and said shaftfor each half of the emitter carries two brushes formed of springcontact blades or brushes, the latter being preferable. Brushes 114 and115 comprise one pair and 116 and 117 the other pair. As brush 116 makescontact with the segment 112, it will be seen that the line side 120 isconnected thereto through CR1 cam contacts, and as said brush 116 makescontact with segment 112 the other integral brush 117 passes over aseries of contacts 109 to determine the presence of holes, either singlyor in combination.

As brush 117 makes contact with contact points 109 designated 1, 2, 4,7, 11 and 12, it will be seen that the line side 12% is extended to eachof the contact members 20 designated 1, 2, 4, 7, 11 and 12. Inaccordance with such holes singly the circuit will be extended throughthe corresponding brush 19, the metal brush carrying plate 11b for thelower half of the card and wire 141 to the contact points 111 designated9-0, 11 and 12 and thence through the brush 114, brush 115, segment 113and wire 142, magnet 143 to the line side 121. Thus, it is evident, uponthe occurrence of holes singly, an individual circuit is completedthrough the related brush 19, thereby rendering the associated contactpoint 111 alive which is read out by the brush 114 to energize theaccumulator magnet 143. Of course, said magnet will engage anaccumulator wheel so as to effect the entry of the digits 1, 2, 4, 7 and9. The 11 and 12 impulses created from the 11 and 12 index pointpositions correspond to the X and Y control positions of the customarytabulating card and are provided for control purposes. The manner inwhich this is effected forms no part of the present invention and,therefore, need not be explained in detail.

For the holes which occur in combination the same principles previouslyutilized in the Figures 1 and 2 cmbodiments are also incorporated in theFig. 3 translating circuit network.

When brush 117 engages the 9 contact point 109, it will be seen that thecircuit is extended by wire 144 to the brush 19 designated 7. If thereis a hole at the 2 index point position circuit is then extended throughthe metal plate 11b, brush 19 designated 2 and wire 145 to the contactpoint 111 designated 9, thereby transmitting the 9 differentially timedimpulse to accumulator control magnet 1143, upon occurrence ofcombinational holes 7-2. If the holes were at 7 and 1 a circuit wouldhave been completed through the brush 19 designated 1 and a wire 146 tocontact point 111 designated 8, thereby transmitting the 8differentially timed impulse. As brush 117 makes successive contact withthe contact points 109 designated 6 and the circuit will be extended tothe brush 19 designated 4 and upon the presence of holes 2 m 1 thecircuit will be completed to the contacts 111 designated 6 and 5 in thesame manner as previously explained, thereby transmitting a 6 or a 5differentially timed impulse upon the occurrence of combinational holes4-2 or 4-1.

When brush 117 makes contact with contact point 109 designated 3 acircuit will be extended through the brush 19 designated 2 and seriallycompleted through the brush 19 designated 1 and by the wires 146 and 147to the contact. point 111 designated 3, thereby transmitting, as brush114 makes contact with the 3 contact point, the transmission ofia 3.differentially timed impulse to the magnet 143.

Summarizing, it is evident that five of the digits are transmitteduponthe occurrence of five combinational holes in a controlling column,thus the translation of such holes is effected interiorly, that is, bythe coordination of the perforation analyzing means and the emitter andno exterior translators or converters are necessary.

Fora half revolution of the member 140, pairs of brushes 116-117 and114-115 will then be in position to carry out the translation ofcombinational holes for the upper deck of the card. However, thistranslation is effected in substantially the same way and by aduplication of the devices just described. It will be noted that thebrush carrying plates 11a and 11b are insulated from each other, therebykeeping the translating circuits independent of each other to preventback circuits.

While there have been shown and described and pointed out thefundamental novel features of the invention as applied to a plurality ofmodifications, itwill be understood that various omissions andsubstitutions and changes in the form and details of the devicesillustrated and in their operation may be made by those skilled in theart, without departing from the spirit of the invention. It is theintention, therefore, to be limited only as indicated by the scope ofthe following claims.

What is claimed is:

1. A record perforation analyzing means comprising an electricalconducting plate carrying a plurality of analyzmg elements for a recordcolumn, contact members engageable by said elements through the recordperforatrons, a frame carrying said plate and adapted to be movedrelative to said record to cause said analyzing elements to electricallycontact the respective contact members through the perforations, andmeans for applying a test electrical impulse to one of said contactmembers for determination of its continuity through the relatedanalyzing element encountering a record perforation, said electricalconducting plate, and another record perforation analyzing element incontact with a related contact member through another record perforationin the same column.

2. A combined record perforation analyzing means and emitter comprisingan electrical conducting plate carrying a plurality of analyzingelements, contact members engageable by said analyzing elements throughthe record perforations, a readout section of said emitter comprising acontactor successively engaging readout contacts electrically connectedto each of said analyzing elements to transmit differentially timedimpulses in accordance with the analyzing elements engaging the contactmembers through the perforations, said readout section having asupplemental readout contact engaged by said contactor, and means forapplying a test impulse to one of said contact members for determinationof its continuity through the related analyzing element encountering arecord perforation, said electrical conducting plate, and another recordperforation analyzing element engaging a related contact member throughanother perforation, and to said supplemental readout contact. 7

3. A record perforation analyzing means comprising a plurality ofanalyzing elements, contact members engageable by said analyzingelements through the record perforations, means for applying a firsttest impulse to said analyzing elements to effect upon presence of asingle perforation the continuity of said impulse through an analyzingelement for the single perforation and the related contact member, meansfor applying a second test impulse to one of said contact members forcausing upon presence of two combinational perforations its continuationthrough the related analyzing element for one per foration of a codedcombination, through the record perforation analyzing element for theother perforation of the coded combination to the related contactmember, and means for electrically connecting the record perforationanalyzing elements for the coded combination.

4. A record perforation analyzing means comprising an electricalconducting plate carrying a plurality of analyzing elements, contactmembers engageable by said analyzing elements through the recordperforations, means for applying a first test impulse to said analyzingelements to determine when single perforations occur its continuitythrough an analyzing element for the single perforation and relatedcontact member, and means for applying a second test impulse to one ofsaid contact members for causing its continuation when combinationalperforations occur to the related analyzing element passing through oneperforation of a coded combination, through said electrical conductingplate, and through a record perforation analyzing element for the otherperforation of the coded combination to the related contact member.

5. A combined record perforation analyzing means and emitter comprisinga plurality of analyzing elements, a readout section of said emitterhaving readout points and a contactor therefor, electrical connectionsbetween each analyzing element and related readout points, anothersection of said emitter comprising means for applying a test impulse tosaid analyzing elements to cause the transmission of a differentiallytimed impulse when said contactor engages a readout point connected tothe analyzing element which analyzes a record perforation, asupplemental readout point of said readout section engaged by saidcontactor, and a translating circuit network comprising a circuitnetwork completed serially through two analyzing elements upon presenceof the corresponding two record perforations to said supplementalreadout point, whereby said contactor as it engages said supplementalreadout point transmits a single differentially timed impulse determinedby a coded combination.

6. A combined record perforation analyzing means and emitter comprisinganalyzing elements, contact members engaged thereby through the recordperforations, a readout section of said emitter comprising asupplemental readout point and a plurality of readout points havingindividual wire connections to said contact members, means for applyingan impulse to said analyzing elements, and a contactor successivelycontacting said readout points to transmit said impulse as adifferentially timed impulse in accordance with the single perforationanalyzed, means for applying a second test impulse to the contact memberfor an analyzing element corresponding to one unit of a codedcombination, said impulse being transmitted through said analyzingelement and its corresponding contact member to another analyzingelement and its contact member which correspond to the other unit of thecoded combination, and a supplemental circuit connection between saidlast named contact member and said supplemental readout point, wherebysaid contactor transmits a single differentially timed impulse when itengages said supplemental readout point.

7. A record perforation analyzing means and combined emitter comprisinga plurality of analyzing elements, a readout section of said emittercomprising readout contactpoints, each of which has a circuit connectionto a related-analyzing element and a contactor engaging said readoutcontact points to transmit a differentially timed impulse during thetime a first test impulse is being applied to said analyzing elementsconcurrently, further individual circuit connections between a pluralityof analyzing elements selected according to coded combinations andrelated supplemental readout contact points also engaged by saidcontactor, and means for applying a second test impulse to anotheranalyzing element selected according to the coded combinations tothereby extend the second test impulse through said other analyzingelement and by said further individual circuit connections from eitherof the plurality of analyzing elements to related supplemental readoutcontact points in accordance with the combination of perforationsanalyzed by said plurality of analyzing elements.

8. A combined record perforation analyzing means and emitter comprisinga plurality of analyzing elements, a readout section of said emitterhaving readout points and a contactor therefor, electrical connectionsbetween each analyzing element and related readout points, anothersection of said emitter comprising means for applying a test impulse tosaid analyzing elements during the time said contactor engages saidreadout points to cause the transmission of a differentially timedimpulse when said contactor engages a readout point connected to theanalyzing element which analyzes a record perforation, a supplementalreadout point of said readout section engaged by said contactor, atranslating circuit network comprising a circuit network completedserially through two analyzing elements upon presence of thecorresponding two record perforations to said supplemental readoutpoint, and means for applying a second impulse to one of said twoanalyzing elements to cause as said contactor engages said supplementalreadout point the transmission of a single differentially timed impulsedetermined by the coded combination of perforations.

References Cited in the file of this patent UNITED STATES PATENTS2,448,830 Robbins et al. Sept. 7, 1948

